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Condensed Consolidated Balance Sheets (Parenthetical) (Parentheticals) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Trade accounts receivable, allowance $ 954 $ 1,190
Accumulated amortization of debt issuance costs 15,175 10,186
Intangible assets, accumulated amortization 66,811 44,856
Deferred revenues, related party amounts 71 41
Series A Preferred Units, redemption amount $ 85,129 $ 84,773